• Marine Blue
  hex: #236192
  scss variable: $color-brand-marine-blue
• Dark Blue
  hex: #0064c8
  scss variable: $color-brand-dark-blue
• Bright Green
  hex: #00d649
  scss variable: $color-brand-bright-green
• Light Blue
  hex: #2ec4ff
  scss variable: $color-brand-light-blue

To add to these items, use Sass variables that start with $color-brand- in ./source/css/scss/abstracts/_variables.scss